mirror of
https://github.com/jkriege2/JKQtPlotter.git
synced 2024-12-26 10:31:39 +08:00
88 lines
2.8 KiB
C++
88 lines
2.8 KiB
C++
/*
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Copyright (c) 2008-2022 Jan W. Krieger (<jan@jkrieger.de>)
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This software is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License (LGPL) as published by
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the Free Software Foundation, either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License (LGPL) for more details.
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You should have received a copy of the GNU Lesser General Public License (LGPL)
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "jkqtcommon/jkqtpenhancedpainter.h"
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JKQTPEnhancedPainter::JKQTPEnhancedPainter(QPaintDevice *device):
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QPainter(device),
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m_flags(DefaultPaintMode)
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{
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initQEnhacedPainter();
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}
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JKQTPEnhancedPainter::JKQTPEnhancedPainter():
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QPainter()
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{
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initQEnhacedPainter();
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}
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void JKQTPEnhancedPainter::setPainterFlag(PainterFlag flag, bool enabled)
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{
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if (!enabled && m_flags.testFlag(flag)) m_flags &= ~flag;
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else if (enabled && !m_flags.testFlag(flag)) m_flags |= flag;
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}
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void JKQTPEnhancedPainter::setPainterFlag(PainterFlags flags)
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{
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m_flags=flags;
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}
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void JKQTPEnhancedPainter::drawPolylineFast(const QPointF *points, int pointCount)
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{
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if (!points || pointCount<2) return;
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if (m_flags.testFlag(VectorPainting) || pen().style()!=Qt::SolidLine || pen().widthF()>device()->devicePixelRatioF()+0.01 || pen().widthF()<device()->devicePixelRatioF()*0.8) {
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//qDebug()<<"drawFastPolyline(): widthF="<<pen().widthF();
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drawPolyline(points, pointCount);
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} else {
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//qDebug()<<"drawFastPolyline()";
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// we use a specialized algorithm only in a very defined circumstances
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for (int i=1; i<pointCount; i++) {
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QLineF l(points[i-1], points[i]);
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if (!l.isNull() && l.length()>0) drawLine(l);
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}
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}
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}
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void JKQTPEnhancedPainter::drawPolylineFast(const QPoint *points, int pointCount)
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{
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if (!points || pointCount<2) return;
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if (m_flags.testFlag(VectorPainting) || pen().style()!=Qt::SolidLine || pen().widthF()>1.01) {
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drawPolyline(points, pointCount);
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} else {
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// we use a specialized algorithm only in a very defined circumstances
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for (int i=1; i<pointCount; i++) {
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QLine l(points[i-1], points[i]);
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if (!l.isNull() && (l.dx()>0||l.dy()>0)) drawLine(l);
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}
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}
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}
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JKQTPEnhancedPainter::PainterFlags JKQTPEnhancedPainter::painterFlags() const {
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return m_flags;
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}
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void JKQTPEnhancedPainter::initQEnhacedPainter()
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{
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}
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